Seiko Cal. 5660 - 706

The Seiko 5660-706 represents an important milestone in Seiko's 1984 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-508bc484ae68]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1984

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